Screw for eyeglasses and spectacles.



A. MAEBERT. SCREW FOREYEGLASSES AND SPEGTALES. APPLIoATIoN FILED 11110.15. 1911.

1,053,310. Patented Feb.18,1913.

ALEXANDER MAEBERT, OF BLOOMFIELD, NEW JERSEY.

SCREW FOR EYEGLASSES .AND SPECTACLES.;

Specification of Letters Patent.

Patented Feb. 18, 1913.

Application filed December 15., 1911. Serial. No. 666,009.

To all whom it may concern:

Be it known that I, ALEXANDER MAEBERT,

Y a citizen of the United States,residing in the town of Bloomfield, county of Essex, and State of New Jersey, have invented a new and useful Improvement in'Scre-ws for Eyeglasses and Spectacles, of which the following is a full, clear, and exact description.

My invention relates to an improvement in the fastening of screws used in the manufacture of eye glasses and spectacles, whereby they are prevented from becoming loose after being set in place.- Experience has shownthat in the constant handling of eye glasses and spectacles, and; the changes 'of temperature, the screws used in holding together the parts, work loose and damage and great inconvenience result.

The arrangement consists in milling the cuter edge of the screw head and engaging the milled edges with a spring with a milled end to correspond, which slips into place as the screw isV made fast. The shape of the spring is conventional, except as to the milled end. By the word milled I do not confine myself to a narrow construction, but

to notches in the periphery of the screw head sufficient to engage lthe spring andbe screw-bolt showing the notched or polygonal periphery to its head. Fig. 4 represents the spring in enlarged form.

In. Fig. 1, the bridge of the eye glasses isA shown by A, and it meets' at L shown in Fig. 2, the skeleton E to which is attached the nose cushion B, and the part to which the glass is atlixed shown by N in Fig. 2.

These three parts are held together with al screw J the head of which, C, contains the point.

usual cleft o by means lof which, and a screwdriver, the screw is turned in. On the screw head C there is a periphery D which has its face notched as indicated. At H there is fastened a light-spring G by a rivet passed-A through h and at the other end of the spring G a notched arrangement a is made, the spring beinelight in structure so asto permit it to be released from the screw head C by pressure when necessary, and it is pivoted L that. part of A at the screw point and. in,

M that part of the skeleton E at the screw The three are held together by the screw J, screwed in in the usual way at the .slot c with a notched edgev on the screw head,

D, engaged by a corresponding notched arrangement a in the spring Gr.

Many modifications might be made in form of screw and spring-without departing from the spirit of my invention.

What I claim as new and desire to secure by Letters Patent is;

In an eyeglass, a bracket supporting the nose pad, a bolt connecting the bracket with the lens support, having a polygonal head, a flat spring pivoted at one end to the nose pad, andhaving its opposite free end con# forming to and adapted to be moved laterles ally out of engagement with the bolt head,

substantially as set forth.

In witness whereof I have signed my name .tofthis specication lin the presence of two ENNIs W. BACHMAN,

JOHN OSCAR BALL. 

